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Open AccessArticle

Effects of Alloying Elements on the Stacking Fault Energies of Ni58Cr32Fe10 Alloys: A First-Principle Study

1
College of Materials Science and Engineering, Sichuan University of Science and Engineering, Zigong 643000, China
2
Atlantic China Welding Consumables, Inc., Zigong 643000, China
*
Author to whom correspondence should be addressed.
Metals 2019, 9(11), 1163; https://doi.org/10.3390/met9111163
Received: 26 September 2019 / Revised: 21 October 2019 / Accepted: 23 October 2019 / Published: 29 October 2019
Ni58Cr32Fe10-based alloys, such as Alloy 690 and filler metal 52 (FM-52), suffer from ductility dip cracking (DDC). It is reported that decreasing the stacking fault energy (SFE) of these materials could improve the DDC resistance of Alloy 690. In this work, the effects of alloying elements on the stacking fault energies (SFEs) of Ni58Cr32Fe10 alloys were studied using first-principle calculations. In our simulations, 2 at.% of Ni is replaced by alloy element X (X=Al, Co, Cu, Hf, Mn, Nb, Ta, Ti, V, and W). At a finite temperature, the SFEs were divided into the magnetic entropy (SFEmag) and 0 K (SFE0) contributions. Potentially, the calculated results could be used in the design of high-performance Ni58Cr32Fe10-based alloys or filler materials. View Full-Text
Keywords: Alloy 690; FM–52; DDC; first-principle calculation; stacking fault energy Alloy 690; FM–52; DDC; first-principle calculation; stacking fault energy
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Dou, Y.; Luo, H.; Jiang, Y.; Tang, X. Effects of Alloying Elements on the Stacking Fault Energies of Ni58Cr32Fe10 Alloys: A First-Principle Study. Metals 2019, 9, 1163.

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